Finding the Third Proportional to 5,478,714 and 8,516,484

Step by Step Solution

1. Step 1: Write the proportion equation
   5,478,714 : 8,516,484 = 8,516,484 : x
2. Step 2: Convert to fraction form
   5,478,714/8,516,484 = 8,516,484/x
3. Step 3: Cross multiply
   5,478,714x = 8,516,484 × 8,516,484
4. Step 4: Simplify right side
   5,478,714x = 72,530,499,722,256
5. Step 5: Solve for x
   x = 72,530,499,722,256/5,478,714
6. Step 6: Final answer
   x = 13,238,599.37