Finding the Third Proportional to 156,742.50 and 242,172

Step by Step Solution

1. Step 1: Write the proportion equation
   156,742.50 : 242,172 = 242,172 : x
2. Step 2: Convert to fraction form
   156,742.50/242,172 = 242,172/x
3. Step 3: Cross multiply
   156,742.50x = 242,172 × 242,172
4. Step 4: Simplify right side
   156,742.50x = 58,647,277,584
5. Step 5: Solve for x
   x = 58,647,277,584/156,742.50
6. Step 6: Final answer
   x = 374,163.21