Finding the Third Proportional to 2,128,407 and 3,189,481.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,407 : 3,189,481.50 = 3,189,481.50 : x
2. Step 2: Convert to fraction form
   2,128,407/3,189,481.50 = 3,189,481.50/x
3. Step 3: Cross multiply
   2,128,407x = 3,189,481.50 × 3,189,481.50
4. Step 4: Simplify right side
   2,128,407x = 10,172,792,238,842.25
5. Step 5: Solve for x
   x = 10,172,792,238,842.25/2,128,407
6. Step 6: Final answer
   x = 4,779,533.35