Finding the Third Proportional to 288,940.50 and 620,892

Step by Step Solution

1. Step 1: Write the proportion equation
   288,940.50 : 620,892 = 620,892 : x
2. Step 2: Convert to fraction form
   288,940.50/620,892 = 620,892/x
3. Step 3: Cross multiply
   288,940.50x = 620,892 × 620,892
4. Step 4: Simplify right side
   288,940.50x = 385,506,875,664
5. Step 5: Solve for x
   x = 385,506,875,664/288,940.50
6. Step 6: Final answer
   x = 1,334,208.52