Finding the Third Proportional to 7,225,516 and 10,638,672

Step by Step Solution

1. Step 1: Write the proportion equation
   7,225,516 : 10,638,672 = 10,638,672 : x
2. Step 2: Convert to fraction form
   7,225,516/10,638,672 = 10,638,672/x
3. Step 3: Cross multiply
   7,225,516x = 10,638,672 × 10,638,672
4. Step 4: Simplify right side
   7,225,516x = 113,181,341,923,584
5. Step 5: Solve for x
   x = 113,181,341,923,584/7,225,516
6. Step 6: Final answer
   x = 15,664,118.93