Finding the Third Proportional to 5,678,340 and 8,817,048

Step by Step Solution

1. Step 1: Write the proportion equation
   5,678,340 : 8,817,048 = 8,817,048 : x
2. Step 2: Convert to fraction form
   5,678,340/8,817,048 = 8,817,048/x
3. Step 3: Cross multiply
   5,678,340x = 8,817,048 × 8,817,048
4. Step 4: Simplify right side
   5,678,340x = 77,740,335,434,304
5. Step 5: Solve for x
   x = 77,740,335,434,304/5,678,340
6. Step 6: Final answer
   x = 13,690,679.92