Finding the Third Proportional to 240,219 and 556,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   240,219 : 556,042.50 = 556,042.50 : x
2. Step 2: Convert to fraction form
   240,219/556,042.50 = 556,042.50/x
3. Step 3: Cross multiply
   240,219x = 556,042.50 × 556,042.50
4. Step 4: Simplify right side
   240,219x = 309,183,261,806.25
5. Step 5: Solve for x
   x = 309,183,261,806.25/240,219
6. Step 6: Final answer
   x = 1,287,089.12