Finding the Third Proportional to 61,578 and 132,979.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,578 : 132,979.50 = 132,979.50 : x
2. Step 2: Convert to fraction form
   61,578/132,979.50 = 132,979.50/x
3. Step 3: Cross multiply
   61,578x = 132,979.50 × 132,979.50
4. Step 4: Simplify right side
   61,578x = 17,683,547,420.25
5. Step 5: Solve for x
   x = 17,683,547,420.25/61,578
6. Step 6: Final answer
   x = 287,173.14