Finding the Third Proportional to 312,052.50 and 584,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   312,052.50 : 584,131.50 = 584,131.50 : x
2. Step 2: Convert to fraction form
   312,052.50/584,131.50 = 584,131.50/x
3. Step 3: Cross multiply
   312,052.50x = 584,131.50 × 584,131.50
4. Step 4: Simplify right side
   312,052.50x = 341,209,609,292.25
5. Step 5: Solve for x
   x = 341,209,609,292.25/312,052.50
6. Step 6: Final answer
   x = 1,093,436.55