Finding the Third Proportional to 686,320 and 1,034,881.50

Step by Step Solution

1. Step 1: Write the proportion equation
   686,320 : 1,034,881.50 = 1,034,881.50 : x
2. Step 2: Convert to fraction form
   686,320/1,034,881.50 = 1,034,881.50/x
3. Step 3: Cross multiply
   686,320x = 1,034,881.50 × 1,034,881.50
4. Step 4: Simplify right side
   686,320x = 1,070,979,719,042.25
5. Step 5: Solve for x
   x = 1,070,979,719,042.25/686,320
6. Step 6: Final answer
   x = 1,560,467.01