Finding the Third Proportional to 190,490.50 and 407,224

Step by Step Solution

1. Step 1: Write the proportion equation
   190,490.50 : 407,224 = 407,224 : x
2. Step 2: Convert to fraction form
   190,490.50/407,224 = 407,224/x
3. Step 3: Cross multiply
   190,490.50x = 407,224 × 407,224
4. Step 4: Simplify right side
   190,490.50x = 165,831,386,176
5. Step 5: Solve for x
   x = 165,831,386,176/190,490.50
6. Step 6: Final answer
   x = 870,549.38