Finding the Third Proportional to 31,987,916 and 69,072,960

Step by Step Solution

1. Step 1: Write the proportion equation
   31,987,916 : 69,072,960 = 69,072,960 : x
2. Step 2: Convert to fraction form
   31,987,916/69,072,960 = 69,072,960/x
3. Step 3: Cross multiply
   31,987,916x = 69,072,960 × 69,072,960
4. Step 4: Simplify right side
   31,987,916x = 4,771,073,803,161,600
5. Step 5: Solve for x
   x = 4,771,073,803,161,600/31,987,916
6. Step 6: Final answer
   x = 149,152,380.02