Finding the Third Proportional to 31,646,434 and 64,970,540

Step by Step Solution

1. Step 1: Write the proportion equation
   31,646,434 : 64,970,540 = 64,970,540 : x
2. Step 2: Convert to fraction form
   31,646,434/64,970,540 = 64,970,540/x
3. Step 3: Cross multiply
   31,646,434x = 64,970,540 × 64,970,540
4. Step 4: Simplify right side
   31,646,434x = 4,221,171,067,891,600
5. Step 5: Solve for x
   x = 4,221,171,067,891,600/31,646,434
6. Step 6: Final answer
   x = 133,385,362.40