Finding the Third Proportional to 341,679 and 747,711.75

Step by Step Solution

1. Step 1: Write the proportion equation
   341,679 : 747,711.75 = 747,711.75 : x
2. Step 2: Convert to fraction form
   341,679/747,711.75 = 747,711.75/x
3. Step 3: Cross multiply
   341,679x = 747,711.75 × 747,711.75
4. Step 4: Simplify right side
   341,679x = 559,072,861,088.06
5. Step 5: Solve for x
   x = 559,072,861,088.06/341,679
6. Step 6: Final answer
   x = 1,636,251.75