Finding the Third Proportional to 29,787.75 and 64,939.50

Step by Step Solution

1. Step 1: Write the proportion equation
   29,787.75 : 64,939.50 = 64,939.50 : x
2. Step 2: Convert to fraction form
   29,787.75/64,939.50 = 64,939.50/x
3. Step 3: Cross multiply
   29,787.75x = 64,939.50 × 64,939.50
4. Step 4: Simplify right side
   29,787.75x = 4,217,138,660.25
5. Step 5: Solve for x
   x = 4,217,138,660.25/29,787.75
6. Step 6: Final answer
   x = 141,572.92