Finding the Third Proportional to 130,476 and 287,928

Step by Step Solution

1. Step 1: Write the proportion equation
   130,476 : 287,928 = 287,928 : x
2. Step 2: Convert to fraction form
   130,476/287,928 = 287,928/x
3. Step 3: Cross multiply
   130,476x = 287,928 × 287,928
4. Step 4: Simplify right side
   130,476x = 82,902,533,184
5. Step 5: Solve for x
   x = 82,902,533,184/130,476
6. Step 6: Final answer
   x = 635,385.31