Finding the Third Proportional to 31,859,464 and 69,912,072

Step by Step Solution

1. Step 1: Write the proportion equation
   31,859,464 : 69,912,072 = 69,912,072 : x
2. Step 2: Convert to fraction form
   31,859,464/69,912,072 = 69,912,072/x
3. Step 3: Cross multiply
   31,859,464x = 69,912,072 × 69,912,072
4. Step 4: Simplify right side
   31,859,464x = 4,887,697,811,333,184
5. Step 5: Solve for x
   x = 4,887,697,811,333,184/31,859,464
6. Step 6: Final answer
   x = 153,414,313.92