Finding the Third Proportional to 159,789 and 349,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   159,789 : 349,642.50 = 349,642.50 : x
2. Step 2: Convert to fraction form
   159,789/349,642.50 = 349,642.50/x
3. Step 3: Cross multiply
   159,789x = 349,642.50 × 349,642.50
4. Step 4: Simplify right side
   159,789x = 122,249,877,806.25
5. Step 5: Solve for x
   x = 122,249,877,806.25/159,789
6. Step 6: Final answer
   x = 765,070.67