Finding the Third Proportional to 543,685.50 and 1,279,307.25

Step by Step Solution

1. Step 1: Write the proportion equation
   543,685.50 : 1,279,307.25 = 1,279,307.25 : x
2. Step 2: Convert to fraction form
   543,685.50/1,279,307.25 = 1,279,307.25/x
3. Step 3: Cross multiply
   543,685.50x = 1,279,307.25 × 1,279,307.25
4. Step 4: Simplify right side
   543,685.50x = 1,636,627,039,902.56
5. Step 5: Solve for x
   x = 1,636,627,039,902.56/543,685.50
6. Step 6: Final answer
   x = 3,010,245.89