Finding the Third Proportional to 7,920,672 and 12,244,716

Step by Step Solution

1. Step 1: Write the proportion equation
   7,920,672 : 12,244,716 = 12,244,716 : x
2. Step 2: Convert to fraction form
   7,920,672/12,244,716 = 12,244,716/x
3. Step 3: Cross multiply
   7,920,672x = 12,244,716 × 12,244,716
4. Step 4: Simplify right side
   7,920,672x = 149,933,069,920,656
5. Step 5: Solve for x
   x = 149,933,069,920,656/7,920,672
6. Step 6: Final answer
   x = 18,929,337.05