Finding the Third Proportional to 72,492 and 102,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,492 : 102,085.50 = 102,085.50 : x
2. Step 2: Convert to fraction form
   72,492/102,085.50 = 102,085.50/x
3. Step 3: Cross multiply
   72,492x = 102,085.50 × 102,085.50
4. Step 4: Simplify right side
   72,492x = 10,421,449,310.25
5. Step 5: Solve for x
   x = 10,421,449,310.25/72,492
6. Step 6: Final answer
   x = 143,759.99