Finding the Third Proportional to 156,145.50 and 347,229

Step by Step Solution

1. Step 1: Write the proportion equation
   156,145.50 : 347,229 = 347,229 : x
2. Step 2: Convert to fraction form
   156,145.50/347,229 = 347,229/x
3. Step 3: Cross multiply
   156,145.50x = 347,229 × 347,229
4. Step 4: Simplify right side
   156,145.50x = 120,567,978,441
5. Step 5: Solve for x
   x = 120,567,978,441/156,145.50
6. Step 6: Final answer
   x = 772,151.48