Finding the Third Proportional to 288,811.50 and 633,423

Step by Step Solution

1. Step 1: Write the proportion equation
   288,811.50 : 633,423 = 633,423 : x
2. Step 2: Convert to fraction form
   288,811.50/633,423 = 633,423/x
3. Step 3: Cross multiply
   288,811.50x = 633,423 × 633,423
4. Step 4: Simplify right side
   288,811.50x = 401,224,696,929
5. Step 5: Solve for x
   x = 401,224,696,929/288,811.50
6. Step 6: Final answer
   x = 1,389,226.87