Finding the Third Proportional to 357,561.50 and 530,155

Step by Step Solution

1. Step 1: Write the proportion equation
   357,561.50 : 530,155 = 530,155 : x
2. Step 2: Convert to fraction form
   357,561.50/530,155 = 530,155/x
3. Step 3: Cross multiply
   357,561.50x = 530,155 × 530,155
4. Step 4: Simplify right side
   357,561.50x = 281,064,324,025
5. Step 5: Solve for x
   x = 281,064,324,025/357,561.50
6. Step 6: Final answer
   x = 786,058.69