Finding the Third Proportional to 287,056 and 448,025.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,056 : 448,025.50 = 448,025.50 : x
2. Step 2: Convert to fraction form
   287,056/448,025.50 = 448,025.50/x
3. Step 3: Cross multiply
   287,056x = 448,025.50 × 448,025.50
4. Step 4: Simplify right side
   287,056x = 200,726,848,650.25
5. Step 5: Solve for x
   x = 200,726,848,650.25/287,056
6. Step 6: Final answer
   x = 699,260.24