Finding the Third Proportional to 136,547.50 and 279,656

Step by Step Solution

1. Step 1: Write the proportion equation
   136,547.50 : 279,656 = 279,656 : x
2. Step 2: Convert to fraction form
   136,547.50/279,656 = 279,656/x
3. Step 3: Cross multiply
   136,547.50x = 279,656 × 279,656
4. Step 4: Simplify right side
   136,547.50x = 78,207,478,336
5. Step 5: Solve for x
   x = 78,207,478,336/136,547.50
6. Step 6: Final answer
   x = 572,749.25