Finding the Third Proportional to 228,643.50 and 525,870

Step by Step Solution

1. Step 1: Write the proportion equation
   228,643.50 : 525,870 = 525,870 : x
2. Step 2: Convert to fraction form
   228,643.50/525,870 = 525,870/x
3. Step 3: Cross multiply
   228,643.50x = 525,870 × 525,870
4. Step 4: Simplify right side
   228,643.50x = 276,539,256,900
5. Step 5: Solve for x
   x = 276,539,256,900/228,643.50
6. Step 6: Final answer
   x = 1,209,477.89