Finding the Third Proportional to 686,316 and 1,034,875

Step by Step Solution

1. Step 1: Write the proportion equation
   686,316 : 1,034,875 = 1,034,875 : x
2. Step 2: Convert to fraction form
   686,316/1,034,875 = 1,034,875/x
3. Step 3: Cross multiply
   686,316x = 1,034,875 × 1,034,875
4. Step 4: Simplify right side
   686,316x = 1,070,966,265,625
5. Step 5: Solve for x
   x = 1,070,966,265,625/686,316
6. Step 6: Final answer
   x = 1,560,456.50