Finding the Third Proportional to 130,924 and 287,336

Step by Step Solution

1. Step 1: Write the proportion equation
   130,924 : 287,336 = 287,336 : x
2. Step 2: Convert to fraction form
   130,924/287,336 = 287,336/x
3. Step 3: Cross multiply
   130,924x = 287,336 × 287,336
4. Step 4: Simplify right side
   130,924x = 82,561,976,896
5. Step 5: Solve for x
   x = 82,561,976,896/130,924
6. Step 6: Final answer
   x = 630,609.95