Finding the Third Proportional to 7,860,672 and 12,499,606

Step by Step Solution

1. Step 1: Write the proportion equation
   7,860,672 : 12,499,606 = 12,499,606 : x
2. Step 2: Convert to fraction form
   7,860,672/12,499,606 = 12,499,606/x
3. Step 3: Cross multiply
   7,860,672x = 12,499,606 × 12,499,606
4. Step 4: Simplify right side
   7,860,672x = 156,240,150,155,236
5. Step 5: Solve for x
   x = 156,240,150,155,236/7,860,672
6. Step 6: Final answer
   x = 19,876,182.36