Finding the Third Proportional to 345,942 and 759,988.50

Step by Step Solution

1. Step 1: Write the proportion equation
   345,942 : 759,988.50 = 759,988.50 : x
2. Step 2: Convert to fraction form
   345,942/759,988.50 = 759,988.50/x
3. Step 3: Cross multiply
   345,942x = 759,988.50 × 759,988.50
4. Step 4: Simplify right side
   345,942x = 577,582,520,132.25
5. Step 5: Solve for x
   x = 577,582,520,132.25/345,942
6. Step 6: Final answer
   x = 1,669,593.52