Finding the Third Proportional to 47,691 and 72,152

Step by Step Solution

1. Step 1: Write the proportion equation
   47,691 : 72,152 = 72,152 : x
2. Step 2: Convert to fraction form
   47,691/72,152 = 72,152/x
3. Step 3: Cross multiply
   47,691x = 72,152 × 72,152
4. Step 4: Simplify right side
   47,691x = 5,205,911,104
5. Step 5: Solve for x
   x = 5,205,911,104/47,691
6. Step 6: Final answer
   x = 109,159.19