Finding the Third Proportional to 5,478,016 and 8,516,040

Step by Step Solution

1. Step 1: Write the proportion equation
   5,478,016 : 8,516,040 = 8,516,040 : x
2. Step 2: Convert to fraction form
   5,478,016/8,516,040 = 8,516,040/x
3. Step 3: Cross multiply
   5,478,016x = 8,516,040 × 8,516,040
4. Step 4: Simplify right side
   5,478,016x = 72,522,937,281,600
5. Step 5: Solve for x
   x = 72,522,937,281,600/5,478,016
6. Step 6: Final answer
   x = 13,238,905.71