Finding the Third Proportional to 2,990,634 and 6,406,518

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990,634 : 6,406,518 = 6,406,518 : x
2. Step 2: Convert to fraction form
   2,990,634/6,406,518 = 6,406,518/x
3. Step 3: Cross multiply
   2,990,634x = 6,406,518 × 6,406,518
4. Step 4: Simplify right side
   2,990,634x = 41,043,472,884,324
5. Step 5: Solve for x
   x = 41,043,472,884,324/2,990,634
6. Step 6: Final answer
   x = 13,724,003.97