Finding the Third Proportional to 89,834,799,460 and 139,546,520,155

Step by Step Solution

1. Step 1: Write the proportion equation
   89,834,799,460 : 139,546,520,155 = 139,546,520,155 : x
2. Step 2: Convert to fraction form
   89,834,799,460/139,546,520,155 = 139,546,520,155/x
3. Step 3: Cross multiply
   89,834,799,460x = 139,546,520,155 × 139,546,520,155
4. Step 4: Simplify right side
   89,834,799,460x = 19,473,231,287,369,819,226,112
5. Step 5: Solve for x
   x = 19,473,231,287,369,819,226,112/89,834,799,460
6. Step 6: Final answer
   x = 216,767,125,929.20