Finding the Third Proportional to 31,284 and 66,451.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,284 : 66,451.50 = 66,451.50 : x
2. Step 2: Convert to fraction form
   31,284/66,451.50 = 66,451.50/x
3. Step 3: Cross multiply
   31,284x = 66,451.50 × 66,451.50
4. Step 4: Simplify right side
   31,284x = 4,415,801,852.25
5. Step 5: Solve for x
   x = 4,415,801,852.25/31,284
6. Step 6: Final answer
   x = 141,152.09