Finding the Third Proportional to 4,012,500 and 8,679,460

Step by Step Solution

1. Step 1: Write the proportion equation
   4,012,500 : 8,679,460 = 8,679,460 : x
2. Step 2: Convert to fraction form
   4,012,500/8,679,460 = 8,679,460/x
3. Step 3: Cross multiply
   4,012,500x = 8,679,460 × 8,679,460
4. Step 4: Simplify right side
   4,012,500x = 75,333,025,891,600
5. Step 5: Solve for x
   x = 75,333,025,891,600/4,012,500
6. Step 6: Final answer
   x = 18,774,585.89