Finding the Third Proportional to 137,787.75 and 300,847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   137,787.75 : 300,847.50 = 300,847.50 : x
2. Step 2: Convert to fraction form
   137,787.75/300,847.50 = 300,847.50/x
3. Step 3: Cross multiply
   137,787.75x = 300,847.50 × 300,847.50
4. Step 4: Simplify right side
   137,787.75x = 90,509,218,256.25
5. Step 5: Solve for x
   x = 90,509,218,256.25/137,787.75
6. Step 6: Final answer
   x = 656,874.20