Finding the Third Proportional to 685,876.50 and 1,507,500

Step by Step Solution

1. Step 1: Write the proportion equation
   685,876.50 : 1,507,500 = 1,507,500 : x
2. Step 2: Convert to fraction form
   685,876.50/1,507,500 = 1,507,500/x
3. Step 3: Cross multiply
   685,876.50x = 1,507,500 × 1,507,500
4. Step 4: Simplify right side
   685,876.50x = 2,272,556,250,000
5. Step 5: Solve for x
   x = 2,272,556,250,000/685,876.50
6. Step 6: Final answer
   x = 3,313,360.71