Finding the Third Proportional to 619,375.50 and 905,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   619,375.50 : 905,152.50 = 905,152.50 : x
2. Step 2: Convert to fraction form
   619,375.50/905,152.50 = 905,152.50/x
3. Step 3: Cross multiply
   619,375.50x = 905,152.50 × 905,152.50
4. Step 4: Simplify right side
   619,375.50x = 819,301,048,256.25
5. Step 5: Solve for x
   x = 819,301,048,256.25/619,375.50
6. Step 6: Final answer
   x = 1,322,785.69