Finding the Third Proportional to 89,971,820,337 and 187,390,555,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,971,820,337 : 187,390,555,321.50 = 187,390,555,321.50 : x
2. Step 2: Convert to fraction form
   89,971,820,337/187,390,555,321.50 = 187,390,555,321.50/x
3. Step 3: Cross multiply
   89,971,820,337x = 187,390,555,321.50 × 187,390,555,321.50
4. Step 4: Simplify right side
   89,971,820,337x = 35,115,220,223,700,152,352,768
5. Step 5: Solve for x
   x = 35,115,220,223,700,152,352,768/89,971,820,337
6. Step 6: Final answer
   x = 390,291,316,683.07