Finding the Third Proportional to 201,042 and 402,063.75

Step by Step Solution

1. Step 1: Write the proportion equation
   201,042 : 402,063.75 = 402,063.75 : x
2. Step 2: Convert to fraction form
   201,042/402,063.75 = 402,063.75/x
3. Step 3: Cross multiply
   201,042x = 402,063.75 × 402,063.75
4. Step 4: Simplify right side
   201,042x = 161,655,259,064.06
5. Step 5: Solve for x
   x = 161,655,259,064.06/201,042
6. Step 6: Final answer
   x = 804,087.00