Finding the Third Proportional to 721,261.50 and 1,061,480.25

Step by Step Solution

1. Step 1: Write the proportion equation
   721,261.50 : 1,061,480.25 = 1,061,480.25 : x
2. Step 2: Convert to fraction form
   721,261.50/1,061,480.25 = 1,061,480.25/x
3. Step 3: Cross multiply
   721,261.50x = 1,061,480.25 × 1,061,480.25
4. Step 4: Simplify right side
   721,261.50x = 1,126,740,321,140.06
5. Step 5: Solve for x
   x = 1,126,740,321,140.06/721,261.50
6. Step 6: Final answer
   x = 1,562,180.04