Finding the Third Proportional to 231,360 and 345,130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   231,360 : 345,130.50 = 345,130.50 : x
2. Step 2: Convert to fraction form
   231,360/345,130.50 = 345,130.50/x
3. Step 3: Cross multiply
   231,360x = 345,130.50 × 345,130.50
4. Step 4: Simplify right side
   231,360x = 119,115,062,030.25
5. Step 5: Solve for x
   x = 119,115,062,030.25/231,360
6. Step 6: Final answer
   x = 514,847.26