Finding the Third Proportional to 406,862.25 and 891,231

Step by Step Solution

1. Step 1: Write the proportion equation
   406,862.25 : 891,231 = 891,231 : x
2. Step 2: Convert to fraction form
   406,862.25/891,231 = 891,231/x
3. Step 3: Cross multiply
   406,862.25x = 891,231 × 891,231
4. Step 4: Simplify right side
   406,862.25x = 794,292,695,361
5. Step 5: Solve for x
   x = 794,292,695,361/406,862.25
6. Step 6: Final answer
   x = 1,952,239.84