Finding the Third Proportional to 288,327 and 619,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   288,327 : 619,300.50 = 619,300.50 : x
2. Step 2: Convert to fraction form
   288,327/619,300.50 = 619,300.50/x
3. Step 3: Cross multiply
   288,327x = 619,300.50 × 619,300.50
4. Step 4: Simplify right side
   288,327x = 383,533,109,300.25
5. Step 5: Solve for x
   x = 383,533,109,300.25/288,327
6. Step 6: Final answer
   x = 1,330,201.85