Finding the Third Proportional to 300,070.50 and 424,585.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,070.50 : 424,585.50 = 424,585.50 : x
2. Step 2: Convert to fraction form
   300,070.50/424,585.50 = 424,585.50/x
3. Step 3: Cross multiply
   300,070.50x = 424,585.50 × 424,585.50
4. Step 4: Simplify right side
   300,070.50x = 180,272,846,810.25
5. Step 5: Solve for x
   x = 180,272,846,810.25/300,070.50
6. Step 6: Final answer
   x = 600,768.31