Finding the Third Proportional to 190,651.50 and 407,475

Step by Step Solution

1. Step 1: Write the proportion equation
   190,651.50 : 407,475 = 407,475 : x
2. Step 2: Convert to fraction form
   190,651.50/407,475 = 407,475/x
3. Step 3: Cross multiply
   190,651.50x = 407,475 × 407,475
4. Step 4: Simplify right side
   190,651.50x = 166,035,875,625
5. Step 5: Solve for x
   x = 166,035,875,625/190,651.50
6. Step 6: Final answer
   x = 870,886.80