Finding the Third Proportional to 72,812 and 109,887

Step by Step Solution

1. Step 1: Write the proportion equation
   72,812 : 109,887 = 109,887 : x
2. Step 2: Convert to fraction form
   72,812/109,887 = 109,887/x
3. Step 3: Cross multiply
   72,812x = 109,887 × 109,887
4. Step 4: Simplify right side
   72,812x = 12,075,152,769
5. Step 5: Solve for x
   x = 12,075,152,769/72,812
6. Step 6: Final answer
   x = 165,840.15