Finding the Third Proportional to 53,172 and 74,502

Step by Step Solution

1. Step 1: Write the proportion equation
   53,172 : 74,502 = 74,502 : x
2. Step 2: Convert to fraction form
   53,172/74,502 = 74,502/x
3. Step 3: Cross multiply
   53,172x = 74,502 × 74,502
4. Step 4: Simplify right side
   53,172x = 5,550,548,004
5. Step 5: Solve for x
   x = 5,550,548,004/53,172
6. Step 6: Final answer
   x = 104,388.55