Finding the Third Proportional to 51,364 and 72,120

Step by Step Solution

1. Step 1: Write the proportion equation
   51,364 : 72,120 = 72,120 : x
2. Step 2: Convert to fraction form
   51,364/72,120 = 72,120/x
3. Step 3: Cross multiply
   51,364x = 72,120 × 72,120
4. Step 4: Simplify right side
   51,364x = 5,201,294,400
5. Step 5: Solve for x
   x = 5,201,294,400/51,364
6. Step 6: Final answer
   x = 101,263.42