Finding the Third Proportional to 31,519,660 and 69,017,960

Step by Step Solution

1. Step 1: Write the proportion equation
   31,519,660 : 69,017,960 = 69,017,960 : x
2. Step 2: Convert to fraction form
   31,519,660/69,017,960 = 69,017,960/x
3. Step 3: Cross multiply
   31,519,660x = 69,017,960 × 69,017,960
4. Step 4: Simplify right side
   31,519,660x = 4,763,478,802,561,600
5. Step 5: Solve for x
   x = 4,763,478,802,561,600/31,519,660
6. Step 6: Final answer
   x = 151,127,226.71