Finding the Third Proportional to 132,090 and 287,748

Step by Step Solution

1. Step 1: Write the proportion equation
   132,090 : 287,748 = 287,748 : x
2. Step 2: Convert to fraction form
   132,090/287,748 = 287,748/x
3. Step 3: Cross multiply
   132,090x = 287,748 × 287,748
4. Step 4: Simplify right side
   132,090x = 82,798,911,504
5. Step 5: Solve for x
   x = 82,798,911,504/132,090
6. Step 6: Final answer
   x = 626,837.09