Finding the Third Proportional to 20,139 and 45,501

Step by Step Solution

1. Step 1: Write the proportion equation
   20,139 : 45,501 = 45,501 : x
2. Step 2: Convert to fraction form
   20,139/45,501 = 45,501/x
3. Step 3: Cross multiply
   20,139x = 45,501 × 45,501
4. Step 4: Simplify right side
   20,139x = 2,070,341,001
5. Step 5: Solve for x
   x = 2,070,341,001/20,139
6. Step 6: Final answer
   x = 102,802.57