Finding the Third Proportional to 250,357.50 and 556,689.38

Step by Step Solution

1. Step 1: Write the proportion equation
   250,357.50 : 556,689.38 = 556,689.38 : x
2. Step 2: Convert to fraction form
   250,357.50/556,689.38 = 556,689.38/x
3. Step 3: Cross multiply
   250,357.50x = 556,689.38 × 556,689.38
4. Step 4: Simplify right side
   250,357.50x = 309,903,060,237.89
5. Step 5: Solve for x
   x = 309,903,060,237.89/250,357.50
6. Step 6: Final answer
   x = 1,237,842.13