Finding the Third Proportional to 261,318 and 572,457.75

Step by Step Solution

1. Step 1: Write the proportion equation
   261,318 : 572,457.75 = 572,457.75 : x
2. Step 2: Convert to fraction form
   261,318/572,457.75 = 572,457.75/x
3. Step 3: Cross multiply
   261,318x = 572,457.75 × 572,457.75
4. Step 4: Simplify right side
   261,318x = 327,707,875,535.06
5. Step 5: Solve for x
   x = 327,707,875,535.06/261,318
6. Step 6: Final answer
   x = 1,254,057.80