Finding the Third Proportional to 435,828 and 653,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   435,828 : 653,719.50 = 653,719.50 : x
2. Step 2: Convert to fraction form
   435,828/653,719.50 = 653,719.50/x
3. Step 3: Cross multiply
   435,828x = 653,719.50 × 653,719.50
4. Step 4: Simplify right side
   435,828x = 427,349,184,680.25
5. Step 5: Solve for x
   x = 427,349,184,680.25/435,828
6. Step 6: Final answer
   x = 980,545.50