Finding the Third Proportional to 2,199,772.69 and 3,220,909.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199,772.69 : 3,220,909.31 = 3,220,909.31 : x
2. Step 2: Convert to fraction form
   2,199,772.69/3,220,909.31 = 3,220,909.31/x
3. Step 3: Cross multiply
   2,199,772.69x = 3,220,909.31 × 3,220,909.31
4. Step 4: Simplify right side
   2,199,772.69x = 10,374,256,799,349.22
5. Step 5: Solve for x
   x = 10,374,256,799,349.22/2,199,772.69
6. Step 6: Final answer
   x = 4,716,058.55