Finding the Third Proportional to 5,187,958 and 8,287,846

Step by Step Solution

1. Step 1: Write the proportion equation
   5,187,958 : 8,287,846 = 8,287,846 : x
2. Step 2: Convert to fraction form
   5,187,958/8,287,846 = 8,287,846/x
3. Step 3: Cross multiply
   5,187,958x = 8,287,846 × 8,287,846
4. Step 4: Simplify right side
   5,187,958x = 68,688,391,319,716
5. Step 5: Solve for x
   x = 68,688,391,319,716/5,187,958
6. Step 6: Final answer
   x = 13,239,966.73