Finding the Third Proportional to 252,928 and 381,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   252,928 : 381,061.50 = 381,061.50 : x
2. Step 2: Convert to fraction form
   252,928/381,061.50 = 381,061.50/x
3. Step 3: Cross multiply
   252,928x = 381,061.50 × 381,061.50
4. Step 4: Simplify right side
   252,928x = 145,207,866,782.25
5. Step 5: Solve for x
   x = 145,207,866,782.25/252,928
6. Step 6: Final answer
   x = 574,107.52