Finding the Third Proportional to 89,971,819,676 and 187,390,553,904

Step by Step Solution

1. Step 1: Write the proportion equation
   89,971,819,676 : 187,390,553,904 = 187,390,553,904 : x
2. Step 2: Convert to fraction form
   89,971,819,676/187,390,553,904 = 187,390,553,904/x
3. Step 3: Cross multiply
   89,971,819,676x = 187,390,553,904 × 187,390,553,904
4. Step 4: Simplify right side
   89,971,819,676x = 35,115,219,692,447,929,991,168
5. Step 5: Solve for x
   x = 35,115,219,692,447,929,991,168/89,971,819,676
6. Step 6: Final answer
   x = 390,291,313,645.79