Finding the Third Proportional to 156,780 and 344,774

Step by Step Solution

1. Step 1: Write the proportion equation
   156,780 : 344,774 = 344,774 : x
2. Step 2: Convert to fraction form
   156,780/344,774 = 344,774/x
3. Step 3: Cross multiply
   156,780x = 344,774 × 344,774
4. Step 4: Simplify right side
   156,780x = 118,869,111,076
5. Step 5: Solve for x
   x = 118,869,111,076/156,780
6. Step 6: Final answer
   x = 758,190.53