Finding the Third Proportional to 99,572 and 154,140

Step by Step Solution

1. Step 1: Write the proportion equation
   99,572 : 154,140 = 154,140 : x
2. Step 2: Convert to fraction form
   99,572/154,140 = 154,140/x
3. Step 3: Cross multiply
   99,572x = 154,140 × 154,140
4. Step 4: Simplify right side
   99,572x = 23,759,139,600
5. Step 5: Solve for x
   x = 23,759,139,600/99,572
6. Step 6: Final answer
   x = 238,612.66