Finding the Third Proportional to 31,516,728 and 69,012,168

Step by Step Solution

1. Step 1: Write the proportion equation
   31,516,728 : 69,012,168 = 69,012,168 : x
2. Step 2: Convert to fraction form
   31,516,728/69,012,168 = 69,012,168/x
3. Step 3: Cross multiply
   31,516,728x = 69,012,168 × 69,012,168
4. Step 4: Simplify right side
   31,516,728x = 4,762,679,332,060,224
5. Step 5: Solve for x
   x = 4,762,679,332,060,224/31,516,728
6. Step 6: Final answer
   x = 151,115,919.52