Finding the Third Proportional to 428,572.50 and 904,857

Step by Step Solution

1. Step 1: Write the proportion equation
   428,572.50 : 904,857 = 904,857 : x
2. Step 2: Convert to fraction form
   428,572.50/904,857 = 904,857/x
3. Step 3: Cross multiply
   428,572.50x = 904,857 × 904,857
4. Step 4: Simplify right side
   428,572.50x = 818,766,190,449
5. Step 5: Solve for x
   x = 818,766,190,449/428,572.50
6. Step 6: Final answer
   x = 1,910,449.67