Finding the Third Proportional to 240,353 and 556,406.50

Step by Step Solution

1. Step 1: Write the proportion equation
   240,353 : 556,406.50 = 556,406.50 : x
2. Step 2: Convert to fraction form
   240,353/556,406.50 = 556,406.50/x
3. Step 3: Cross multiply
   240,353x = 556,406.50 × 556,406.50
4. Step 4: Simplify right side
   240,353x = 309,588,193,242.25
5. Step 5: Solve for x
   x = 309,588,193,242.25/240,353
6. Step 6: Final answer
   x = 1,288,056.29