Finding the Third Proportional to 72,410 and 153,560

Step by Step Solution

1. Step 1: Write the proportion equation
   72,410 : 153,560 = 153,560 : x
2. Step 2: Convert to fraction form
   72,410/153,560 = 153,560/x
3. Step 3: Cross multiply
   72,410x = 153,560 × 153,560
4. Step 4: Simplify right side
   72,410x = 23,580,673,600
5. Step 5: Solve for x
   x = 23,580,673,600/72,410
6. Step 6: Final answer
   x = 325,654.93