Finding the Third Proportional to 89,971,820,334 and 187,390,555,318

Step by Step Solution

1. Step 1: Write the proportion equation
   89,971,820,334 : 187,390,555,318 = 187,390,555,318 : x
2. Step 2: Convert to fraction form
   89,971,820,334/187,390,555,318 = 187,390,555,318/x
3. Step 3: Cross multiply
   89,971,820,334x = 187,390,555,318 × 187,390,555,318
4. Step 4: Simplify right side
   89,971,820,334x = 35,115,220,222,388,417,331,200
5. Step 5: Solve for x
   x = 35,115,220,222,388,417,331,200/89,971,820,334
6. Step 6: Final answer
   x = 390,291,316,681.50