Finding the Third Proportional to 162,780 and 351,877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,780 : 351,877.50 = 351,877.50 : x
2. Step 2: Convert to fraction form
   162,780/351,877.50 = 351,877.50/x
3. Step 3: Cross multiply
   162,780x = 351,877.50 × 351,877.50
4. Step 4: Simplify right side
   162,780x = 123,817,775,006.25
5. Step 5: Solve for x
   x = 123,817,775,006.25/162,780
6. Step 6: Final answer
   x = 760,644.89