Finding the Third Proportional to 298,083 and 437,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   298,083 : 437,620.50 = 437,620.50 : x
2. Step 2: Convert to fraction form
   298,083/437,620.50 = 437,620.50/x
3. Step 3: Cross multiply
   298,083x = 437,620.50 × 437,620.50
4. Step 4: Simplify right side
   298,083x = 191,511,702,020.25
5. Step 5: Solve for x
   x = 191,511,702,020.25/298,083
6. Step 6: Final answer
   x = 642,477.77