Finding the Third Proportional to 158,211 and 351,415.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,211 : 351,415.50 = 351,415.50 : x
2. Step 2: Convert to fraction form
   158,211/351,415.50 = 351,415.50/x
3. Step 3: Cross multiply
   158,211x = 351,415.50 × 351,415.50
4. Step 4: Simplify right side
   158,211x = 123,492,853,640.25
5. Step 5: Solve for x
   x = 123,492,853,640.25/158,211
6. Step 6: Final answer
   x = 780,557.95