Finding the Third Proportional to 312,171.75 and 683,154

Step by Step Solution

1. Step 1: Write the proportion equation
   312,171.75 : 683,154 = 683,154 : x
2. Step 2: Convert to fraction form
   312,171.75/683,154 = 683,154/x
3. Step 3: Cross multiply
   312,171.75x = 683,154 × 683,154
4. Step 4: Simplify right side
   312,171.75x = 466,699,387,716
5. Step 5: Solve for x
   x = 466,699,387,716/312,171.75
6. Step 6: Final answer
   x = 1,495,008.40