Finding the Third Proportional to 124,280,286 and 186,420,404

Step by Step Solution

1. Step 1: Write the proportion equation
   124,280,286 : 186,420,404 = 186,420,404 : x
2. Step 2: Convert to fraction form
   124,280,286/186,420,404 = 186,420,404/x
3. Step 3: Cross multiply
   124,280,286x = 186,420,404 × 186,420,404
4. Step 4: Simplify right side
   124,280,286x = 34,752,567,027,523,216
5. Step 5: Solve for x
   x = 34,752,567,027,523,216/124,280,286
6. Step 6: Final answer
   x = 279,630,568.50