Finding the Third Proportional to 570,685.50 and 854,469

Step by Step Solution

1. Step 1: Write the proportion equation
   570,685.50 : 854,469 = 854,469 : x
2. Step 2: Convert to fraction form
   570,685.50/854,469 = 854,469/x
3. Step 3: Cross multiply
   570,685.50x = 854,469 × 854,469
4. Step 4: Simplify right side
   570,685.50x = 730,117,271,961
5. Step 5: Solve for x
   x = 730,117,271,961/570,685.50
6. Step 6: Final answer
   x = 1,279,368.89