Finding the Third Proportional to 666,287 and 1,023,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   666,287 : 1,023,498.50 = 1,023,498.50 : x
2. Step 2: Convert to fraction form
   666,287/1,023,498.50 = 1,023,498.50/x
3. Step 3: Cross multiply
   666,287x = 1,023,498.50 × 1,023,498.50
4. Step 4: Simplify right side
   666,287x = 1,047,549,179,502.25
5. Step 5: Solve for x
   x = 1,047,549,179,502.25/666,287
6. Step 6: Final answer
   x = 1,572,219.15