Finding the Third Proportional to 355,492.55 and 503,011.27

Step by Step Solution

1. Step 1: Write the proportion equation
   355,492.55 : 503,011.27 = 503,011.27 : x
2. Step 2: Convert to fraction form
   355,492.55/503,011.27 = 503,011.27/x
3. Step 3: Cross multiply
   355,492.55x = 503,011.27 × 503,011.27
4. Step 4: Simplify right side
   355,492.55x = 253,020,333,345.66
5. Step 5: Solve for x
   x = 253,020,333,345.66/355,492.55
6. Step 6: Final answer
   x = 711,745.82