Finding the Third Proportional to 156,358 and 341,390

Step by Step Solution

1. Step 1: Write the proportion equation
   156,358 : 341,390 = 341,390 : x
2. Step 2: Convert to fraction form
   156,358/341,390 = 341,390/x
3. Step 3: Cross multiply
   156,358x = 341,390 × 341,390
4. Step 4: Simplify right side
   156,358x = 116,547,132,100
5. Step 5: Solve for x
   x = 116,547,132,100/156,358
6. Step 6: Final answer
   x = 745,386.43