Finding the Third Proportional to 2,188,188.42 and 3,515,822.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188,188.42 : 3,515,822.72 = 3,515,822.72 : x
2. Step 2: Convert to fraction form
   2,188,188.42/3,515,822.72 = 3,515,822.72/x
3. Step 3: Cross multiply
   2,188,188.42x = 3,515,822.72 × 3,515,822.72
4. Step 4: Simplify right side
   2,188,188.42x = 12,361,009,389,678.64
5. Step 5: Solve for x
   x = 12,361,009,389,678.64/2,188,188.42
6. Step 6: Final answer
   x = 5,648,969.38