Finding the Third Proportional to 131,113.69 and 287,977.78

Step by Step Solution

1. Step 1: Write the proportion equation
   131,113.69 : 287,977.78 = 287,977.78 : x
2. Step 2: Convert to fraction form
   131,113.69/287,977.78 = 287,977.78/x
3. Step 3: Cross multiply
   131,113.69x = 287,977.78 × 287,977.78
4. Step 4: Simplify right side
   131,113.69x = 82,931,202,493.67
5. Step 5: Solve for x
   x = 82,931,202,493.67/131,113.69
6. Step 6: Final answer
   x = 632,513.69