Finding the Third Proportional to 131,314 and 288,158

Step by Step Solution

1. Step 1: Write the proportion equation
   131,314 : 288,158 = 288,158 : x
2. Step 2: Convert to fraction form
   131,314/288,158 = 288,158/x
3. Step 3: Cross multiply
   131,314x = 288,158 × 288,158
4. Step 4: Simplify right side
   131,314x = 83,035,032,964
5. Step 5: Solve for x
   x = 83,035,032,964/131,314
6. Step 6: Final answer
   x = 632,339.53