Finding the Third Proportional to 414,401.50 and 623,140

Step by Step Solution

1. Step 1: Write the proportion equation
   414,401.50 : 623,140 = 623,140 : x
2. Step 2: Convert to fraction form
   414,401.50/623,140 = 623,140/x
3. Step 3: Cross multiply
   414,401.50x = 623,140 × 623,140
4. Step 4: Simplify right side
   414,401.50x = 388,303,459,600
5. Step 5: Solve for x
   x = 388,303,459,600/414,401.50
6. Step 6: Final answer
   x = 937,022.33