Finding the Third Proportional to 322,119 and 686,893.50

Step by Step Solution

1. Step 1: Write the proportion equation
   322,119 : 686,893.50 = 686,893.50 : x
2. Step 2: Convert to fraction form
   322,119/686,893.50 = 686,893.50/x
3. Step 3: Cross multiply
   322,119x = 686,893.50 × 686,893.50
4. Step 4: Simplify right side
   322,119x = 471,822,680,342.25
5. Step 5: Solve for x
   x = 471,822,680,342.25/322,119
6. Step 6: Final answer
   x = 1,464,746.51