Finding the Third Proportional to 136,248 and 204,415.50

Step by Step Solution

1. Step 1: Write the proportion equation
   136,248 : 204,415.50 = 204,415.50 : x
2. Step 2: Convert to fraction form
   136,248/204,415.50 = 204,415.50/x
3. Step 3: Cross multiply
   136,248x = 204,415.50 × 204,415.50
4. Step 4: Simplify right side
   136,248x = 41,785,696,640.25
5. Step 5: Solve for x
   x = 41,785,696,640.25/136,248
6. Step 6: Final answer
   x = 306,688.51