Finding the Third Proportional to 354,991.50 and 770,172

Step by Step Solution

1. Step 1: Write the proportion equation
   354,991.50 : 770,172 = 770,172 : x
2. Step 2: Convert to fraction form
   354,991.50/770,172 = 770,172/x
3. Step 3: Cross multiply
   354,991.50x = 770,172 × 770,172
4. Step 4: Simplify right side
   354,991.50x = 593,164,909,584
5. Step 5: Solve for x
   x = 593,164,909,584/354,991.50
6. Step 6: Final answer
   x = 1,670,927.08