Finding the Third Proportional to 635,809.50 and 891,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   635,809.50 : 891,085.50 = 891,085.50 : x
2. Step 2: Convert to fraction form
   635,809.50/891,085.50 = 891,085.50/x
3. Step 3: Cross multiply
   635,809.50x = 891,085.50 × 891,085.50
4. Step 4: Simplify right side
   635,809.50x = 794,033,368,310.25
5. Step 5: Solve for x
   x = 794,033,368,310.25/635,809.50
6. Step 6: Final answer
   x = 1,248,854.21