Finding the Third Proportional to 374,899.50 and 580,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   374,899.50 : 580,666.50 = 580,666.50 : x
2. Step 2: Convert to fraction form
   374,899.50/580,666.50 = 580,666.50/x
3. Step 3: Cross multiply
   374,899.50x = 580,666.50 × 580,666.50
4. Step 4: Simplify right side
   374,899.50x = 337,173,584,222.25
5. Step 5: Solve for x
   x = 337,173,584,222.25/374,899.50
6. Step 6: Final answer
   x = 899,370.59