Finding the Third Proportional to 143,552,916 and 314,897,989.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,552,916 : 314,897,989.50 = 314,897,989.50 : x
2. Step 2: Convert to fraction form
   143,552,916/314,897,989.50 = 314,897,989.50/x
3. Step 3: Cross multiply
   143,552,916x = 314,897,989.50 × 314,897,989.50
4. Step 4: Simplify right side
   143,552,916x = 99,160,743,791,142,112
5. Step 5: Solve for x
   x = 99,160,743,791,142,112/143,552,916
6. Step 6: Final answer
   x = 690,760,916.28