Finding the Third Proportional to 5,478,600 and 8,516,304

Step by Step Solution

1. Step 1: Write the proportion equation
   5,478,600 : 8,516,304 = 8,516,304 : x
2. Step 2: Convert to fraction form
   5,478,600/8,516,304 = 8,516,304/x
3. Step 3: Cross multiply
   5,478,600x = 8,516,304 × 8,516,304
4. Step 4: Simplify right side
   5,478,600x = 72,527,433,820,416
5. Step 5: Solve for x
   x = 72,527,433,820,416/5,478,600
6. Step 6: Final answer
   x = 13,238,315.23