Finding the Third Proportional to 294,243 and 623,800.50

Step by Step Solution

1. Step 1: Write the proportion equation
   294,243 : 623,800.50 = 623,800.50 : x
2. Step 2: Convert to fraction form
   294,243/623,800.50 = 623,800.50/x
3. Step 3: Cross multiply
   294,243x = 623,800.50 × 623,800.50
4. Step 4: Simplify right side
   294,243x = 389,127,063,800.25
5. Step 5: Solve for x
   x = 389,127,063,800.25/294,243
6. Step 6: Final answer
   x = 1,322,468.38