Finding the Third Proportional to 72,111 and 155,319

Step by Step Solution

1. Step 1: Write the proportion equation
   72,111 : 155,319 = 155,319 : x
2. Step 2: Convert to fraction form
   72,111/155,319 = 155,319/x
3. Step 3: Cross multiply
   72,111x = 155,319 × 155,319
4. Step 4: Simplify right side
   72,111x = 24,123,991,761
5. Step 5: Solve for x
   x = 24,123,991,761/72,111
6. Step 6: Final answer
   x = 334,539.69