Finding the Third Proportional to 20,845.50 and 42,465

Step by Step Solution

1. Step 1: Write the proportion equation
   20,845.50 : 42,465 = 42,465 : x
2. Step 2: Convert to fraction form
   20,845.50/42,465 = 42,465/x
3. Step 3: Cross multiply
   20,845.50x = 42,465 × 42,465
4. Step 4: Simplify right side
   20,845.50x = 1,803,276,225
5. Step 5: Solve for x
   x = 1,803,276,225/20,845.50
6. Step 6: Final answer
   x = 86,506.74