Finding the Third Proportional to 440,433 and 680,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   440,433 : 680,557.50 = 680,557.50 : x
2. Step 2: Convert to fraction form
   440,433/680,557.50 = 680,557.50/x
3. Step 3: Cross multiply
   440,433x = 680,557.50 × 680,557.50
4. Step 4: Simplify right side
   440,433x = 463,158,510,806.25
5. Step 5: Solve for x
   x = 463,158,510,806.25/440,433
6. Step 6: Final answer
   x = 1,051,598.11