Finding the Third Proportional to 5,517,920 and 8,513,056

Step by Step Solution

1. Step 1: Write the proportion equation
   5,517,920 : 8,513,056 = 8,513,056 : x
2. Step 2: Convert to fraction form
   5,517,920/8,513,056 = 8,513,056/x
3. Step 3: Cross multiply
   5,517,920x = 8,513,056 × 8,513,056
4. Step 4: Simplify right side
   5,517,920x = 72,472,122,459,136
5. Step 5: Solve for x
   x = 72,472,122,459,136/5,517,920
6. Step 6: Final answer
   x = 13,133,956.72