Finding the Third Proportional to 3,099,672 and 4,186,620

Step by Step Solution

1. Step 1: Write the proportion equation
   3,099,672 : 4,186,620 = 4,186,620 : x
2. Step 2: Convert to fraction form
   3,099,672/4,186,620 = 4,186,620/x
3. Step 3: Cross multiply
   3,099,672x = 4,186,620 × 4,186,620
4. Step 4: Simplify right side
   3,099,672x = 17,527,787,024,400
5. Step 5: Solve for x
   x = 17,527,787,024,400/3,099,672
6. Step 6: Final answer
   x = 5,654,723.15