Finding the Third Proportional to 31,510,629 and 68,399,118

Step by Step Solution

1. Step 1: Write the proportion equation
   31,510,629 : 68,399,118 = 68,399,118 : x
2. Step 2: Convert to fraction form
   31,510,629/68,399,118 = 68,399,118/x
3. Step 3: Cross multiply
   31,510,629x = 68,399,118 × 68,399,118
4. Step 4: Simplify right side
   31,510,629x = 4,678,439,343,177,924
5. Step 5: Solve for x
   x = 4,678,439,343,177,924/31,510,629
6. Step 6: Final answer
   x = 148,471,785.29