Finding the Third Proportional to 3,298,128.75 and 5,045,278.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,298,128.75 : 5,045,278.50 = 5,045,278.50 : x
2. Step 2: Convert to fraction form
   3,298,128.75/5,045,278.50 = 5,045,278.50/x
3. Step 3: Cross multiply
   3,298,128.75x = 5,045,278.50 × 5,045,278.50
4. Step 4: Simplify right side
   3,298,128.75x = 25,454,835,142,562.25
5. Step 5: Solve for x
   x = 25,454,835,142,562.25/3,298,128.75
6. Step 6: Final answer
   x = 7,717,962.84