Finding the Third Proportional to 136,093.50 and 288,659

Step by Step Solution

1. Step 1: Write the proportion equation
   136,093.50 : 288,659 = 288,659 : x
2. Step 2: Convert to fraction form
   136,093.50/288,659 = 288,659/x
3. Step 3: Cross multiply
   136,093.50x = 288,659 × 288,659
4. Step 4: Simplify right side
   136,093.50x = 83,324,018,281
5. Step 5: Solve for x
   x = 83,324,018,281/136,093.50
6. Step 6: Final answer
   x = 612,255.68