Finding the Third Proportional to 527,191 and 817,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   527,191 : 817,031.50 = 817,031.50 : x
2. Step 2: Convert to fraction form
   527,191/817,031.50 = 817,031.50/x
3. Step 3: Cross multiply
   527,191x = 817,031.50 × 817,031.50
4. Step 4: Simplify right side
   527,191x = 667,540,471,992.25
5. Step 5: Solve for x
   x = 667,540,471,992.25/527,191
6. Step 6: Final answer
   x = 1,266,221.30