Finding the Third Proportional to 89,971,820,338 and 187,390,555,326

Step by Step Solution

1. Step 1: Write the proportion equation
   89,971,820,338 : 187,390,555,326 = 187,390,555,326 : x
2. Step 2: Convert to fraction form
   89,971,820,338/187,390,555,326 = 187,390,555,326/x
3. Step 3: Cross multiply
   89,971,820,338x = 187,390,555,326 × 187,390,555,326
4. Step 4: Simplify right side
   89,971,820,338x = 35,115,220,225,386,665,213,952
5. Step 5: Solve for x
   x = 35,115,220,225,386,665,213,952/89,971,820,338
6. Step 6: Final answer
   x = 390,291,316,697.48