Finding the Third Proportional to 427,863 and 672,925.50

Step by Step Solution

1. Step 1: Write the proportion equation
   427,863 : 672,925.50 = 672,925.50 : x
2. Step 2: Convert to fraction form
   427,863/672,925.50 = 672,925.50/x
3. Step 3: Cross multiply
   427,863x = 672,925.50 × 672,925.50
4. Step 4: Simplify right side
   427,863x = 452,828,728,550.25
5. Step 5: Solve for x
   x = 452,828,728,550.25/427,863
6. Step 6: Final answer
   x = 1,058,349.82