Finding the Third Proportional to 13,990 and 22,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,990 : 22,152.50 = 22,152.50 : x
2. Step 2: Convert to fraction form
   13,990/22,152.50 = 22,152.50/x
3. Step 3: Cross multiply
   13,990x = 22,152.50 × 22,152.50
4. Step 4: Simplify right side
   13,990x = 490,733,256.25
5. Step 5: Solve for x
   x = 490,733,256.25/13,990
6. Step 6: Final answer
   x = 35,077.43