Finding the Third Proportional to 286,892 and 630,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   286,892 : 630,402.50 = 630,402.50 : x
2. Step 2: Convert to fraction form
   286,892/630,402.50 = 630,402.50/x
3. Step 3: Cross multiply
   286,892x = 630,402.50 × 630,402.50
4. Step 4: Simplify right side
   286,892x = 397,407,312,006.25
5. Step 5: Solve for x
   x = 397,407,312,006.25/286,892
6. Step 6: Final answer
   x = 1,385,215.73