Finding the Third Proportional to 132,320 and 290,884

Step by Step Solution

1. Step 1: Write the proportion equation
   132,320 : 290,884 = 290,884 : x
2. Step 2: Convert to fraction form
   132,320/290,884 = 290,884/x
3. Step 3: Cross multiply
   132,320x = 290,884 × 290,884
4. Step 4: Simplify right side
   132,320x = 84,613,501,456
5. Step 5: Solve for x
   x = 84,613,501,456/132,320
6. Step 6: Final answer
   x = 639,461.17