Finding the Third Proportional to 156,780 and 340,938

Step by Step Solution

1. Step 1: Write the proportion equation
   156,780 : 340,938 = 340,938 : x
2. Step 2: Convert to fraction form
   156,780/340,938 = 340,938/x
3. Step 3: Cross multiply
   156,780x = 340,938 × 340,938
4. Step 4: Simplify right side
   156,780x = 116,238,719,844
5. Step 5: Solve for x
   x = 116,238,719,844/156,780
6. Step 6: Final answer
   x = 741,412.93