Finding the Third Proportional to 261,429 and 570,830.25

Step by Step Solution

1. Step 1: Write the proportion equation
   261,429 : 570,830.25 = 570,830.25 : x
2. Step 2: Convert to fraction form
   261,429/570,830.25 = 570,830.25/x
3. Step 3: Cross multiply
   261,429x = 570,830.25 × 570,830.25
4. Step 4: Simplify right side
   261,429x = 325,847,174,315.06
5. Step 5: Solve for x
   x = 325,847,174,315.06/261,429
6. Step 6: Final answer
   x = 1,246,407.91