Finding the Third Proportional to 19,485.75 and 42,085.13

Step by Step Solution

1. Step 1: Write the proportion equation
   19,485.75 : 42,085.13 = 42,085.13 : x
2. Step 2: Convert to fraction form
   19,485.75/42,085.13 = 42,085.13/x
3. Step 3: Cross multiply
   19,485.75x = 42,085.13 × 42,085.13
4. Step 4: Simplify right side
   19,485.75x = 1,771,157,746.27
5. Step 5: Solve for x
   x = 1,771,157,746.27/19,485.75
6. Step 6: Final answer
   x = 90,895.03