Finding the Third Proportional to 725,763 and 1,128,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   725,763 : 1,128,388.50 = 1,128,388.50 : x
2. Step 2: Convert to fraction form
   725,763/1,128,388.50 = 1,128,388.50/x
3. Step 3: Cross multiply
   725,763x = 1,128,388.50 × 1,128,388.50
4. Step 4: Simplify right side
   725,763x = 1,273,260,606,932.25
5. Step 5: Solve for x
   x = 1,273,260,606,932.25/725,763
6. Step 6: Final answer
   x = 1,754,375.20