Finding the Third Proportional to 725,478 and 1,509,810

Step by Step Solution

1. Step 1: Write the proportion equation
   725,478 : 1,509,810 = 1,509,810 : x
2. Step 2: Convert to fraction form
   725,478/1,509,810 = 1,509,810/x
3. Step 3: Cross multiply
   725,478x = 1,509,810 × 1,509,810
4. Step 4: Simplify right side
   725,478x = 2,279,526,236,100
5. Step 5: Solve for x
   x = 2,279,526,236,100/725,478
6. Step 6: Final answer
   x = 3,142,102.50