Finding the Third Proportional to 240,339 and 556,369.50

Step by Step Solution

1. Step 1: Write the proportion equation
   240,339 : 556,369.50 = 556,369.50 : x
2. Step 2: Convert to fraction form
   240,339/556,369.50 = 556,369.50/x
3. Step 3: Cross multiply
   240,339x = 556,369.50 × 556,369.50
4. Step 4: Simplify right side
   240,339x = 309,547,020,530.25
5. Step 5: Solve for x
   x = 309,547,020,530.25/240,339
6. Step 6: Final answer
   x = 1,287,960.01