Finding the Third Proportional to 619,366.50 and 905,145

Step by Step Solution

1. Step 1: Write the proportion equation
   619,366.50 : 905,145 = 905,145 : x
2. Step 2: Convert to fraction form
   619,366.50/905,145 = 905,145/x
3. Step 3: Cross multiply
   619,366.50x = 905,145 × 905,145
4. Step 4: Simplify right side
   619,366.50x = 819,287,471,025
5. Step 5: Solve for x
   x = 819,287,471,025/619,366.50
6. Step 6: Final answer
   x = 1,322,782.99