Finding the Third Proportional to 190,531.50 and 402,447

Step by Step Solution

1. Step 1: Write the proportion equation
   190,531.50 : 402,447 = 402,447 : x
2. Step 2: Convert to fraction form
   190,531.50/402,447 = 402,447/x
3. Step 3: Cross multiply
   190,531.50x = 402,447 × 402,447
4. Step 4: Simplify right side
   190,531.50x = 161,963,587,809
5. Step 5: Solve for x
   x = 161,963,587,809/190,531.50
6. Step 6: Final answer
   x = 850,062.00