Finding the Third Proportional to 245,391 and 529,443

Step by Step Solution

1. Step 1: Write the proportion equation
   245,391 : 529,443 = 529,443 : x
2. Step 2: Convert to fraction form
   245,391/529,443 = 529,443/x
3. Step 3: Cross multiply
   245,391x = 529,443 × 529,443
4. Step 4: Simplify right side
   245,391x = 280,309,890,249
5. Step 5: Solve for x
   x = 280,309,890,249/245,391
6. Step 6: Final answer
   x = 1,142,298.99