Finding the Third Proportional to 1,128,408.47 and 2,200,301.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,408.47 : 2,200,301.72 = 2,200,301.72 : x
2. Step 2: Convert to fraction form
   1,128,408.47/2,200,301.72 = 2,200,301.72/x
3. Step 3: Cross multiply
   1,128,408.47x = 2,200,301.72 × 2,200,301.72
4. Step 4: Simplify right side
   1,128,408.47x = 4,841,327,653,534.20
5. Step 5: Solve for x
   x = 4,841,327,653,534.20/1,128,408.47
6. Step 6: Final answer
   x = 4,290,403.51