Finding the Third Proportional to 31,876.88 and 69,813.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,876.88 : 69,813.56 = 69,813.56 : x
2. Step 2: Convert to fraction form
   31,876.88/69,813.56 = 69,813.56/x
3. Step 3: Cross multiply
   31,876.88x = 69,813.56 × 69,813.56
4. Step 4: Simplify right side
   31,876.88x = 4,873,933,508.94
5. Step 5: Solve for x
   x = 4,873,933,508.94/31,876.88
6. Step 6: Final answer
   x = 152,898.72