Finding the Third Proportional to 322,117.50 and 686,892

Step by Step Solution

1. Step 1: Write the proportion equation
   322,117.50 : 686,892 = 686,892 : x
2. Step 2: Convert to fraction form
   322,117.50/686,892 = 686,892/x
3. Step 3: Cross multiply
   322,117.50x = 686,892 × 686,892
4. Step 4: Simplify right side
   322,117.50x = 471,820,619,664
5. Step 5: Solve for x
   x = 471,820,619,664/322,117.50
6. Step 6: Final answer
   x = 1,464,746.93