Finding the Third Proportional to 140,790.50 and 291,560.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,790.50 : 291,560.50 = 291,560.50 : x
2. Step 2: Convert to fraction form
   140,790.50/291,560.50 = 291,560.50/x
3. Step 3: Cross multiply
   140,790.50x = 291,560.50 × 291,560.50
4. Step 4: Simplify right side
   140,790.50x = 85,007,525,160.25
5. Step 5: Solve for x
   x = 85,007,525,160.25/140,790.50
6. Step 6: Final answer
   x = 603,787.37