Finding the Third Proportional to 20,138.63 and 42,303.94

Step by Step Solution

1. Step 1: Write the proportion equation
   20,138.63 : 42,303.94 = 42,303.94 : x
2. Step 2: Convert to fraction form
   20,138.63/42,303.94 = 42,303.94/x
3. Step 3: Cross multiply
   20,138.63x = 42,303.94 × 42,303.94
4. Step 4: Simplify right side
   20,138.63x = 1,789,623,128.00
5. Step 5: Solve for x
   x = 1,789,623,128.00/20,138.63
6. Step 6: Final answer
   x = 88,865.21