Finding the Third Proportional to 328,107 and 469,192.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,107 : 469,192.50 = 469,192.50 : x
2. Step 2: Convert to fraction form
   328,107/469,192.50 = 469,192.50/x
3. Step 3: Cross multiply
   328,107x = 469,192.50 × 469,192.50
4. Step 4: Simplify right side
   328,107x = 220,141,602,056.25
5. Step 5: Solve for x
   x = 220,141,602,056.25/328,107
6. Step 6: Final answer
   x = 670,944.55