Finding the Third Proportional to 215,536.50 and 503,417.25

Step by Step Solution

1. Step 1: Write the proportion equation
   215,536.50 : 503,417.25 = 503,417.25 : x
2. Step 2: Convert to fraction form
   215,536.50/503,417.25 = 503,417.25/x
3. Step 3: Cross multiply
   215,536.50x = 503,417.25 × 503,417.25
4. Step 4: Simplify right side
   215,536.50x = 253,428,927,597.56
5. Step 5: Solve for x
   x = 253,428,927,597.56/215,536.50
6. Step 6: Final answer
   x = 1,175,805.15