Finding the Third Proportional to 190,146 and 407,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,146 : 407,285.50 = 407,285.50 : x
2. Step 2: Convert to fraction form
   190,146/407,285.50 = 407,285.50/x
3. Step 3: Cross multiply
   190,146x = 407,285.50 × 407,285.50
4. Step 4: Simplify right side
   190,146x = 165,881,478,510.25
5. Step 5: Solve for x
   x = 165,881,478,510.25/190,146
6. Step 6: Final answer
   x = 872,390.05