Finding the Third Proportional to 131,868 and 288,886.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,868 : 288,886.50 = 288,886.50 : x
2. Step 2: Convert to fraction form
   131,868/288,886.50 = 288,886.50/x
3. Step 3: Cross multiply
   131,868x = 288,886.50 × 288,886.50
4. Step 4: Simplify right side
   131,868x = 83,455,409,882.25
5. Step 5: Solve for x
   x = 83,455,409,882.25/131,868
6. Step 6: Final answer
   x = 632,870.82