Finding the Third Proportional to 90,554.63 and 196,666.88

Step by Step Solution

1. Step 1: Write the proportion equation
   90,554.63 : 196,666.88 = 196,666.88 : x
2. Step 2: Convert to fraction form
   90,554.63/196,666.88 = 196,666.88/x
3. Step 3: Cross multiply
   90,554.63x = 196,666.88 × 196,666.88
4. Step 4: Simplify right side
   90,554.63x = 38,677,859,722.27
5. Step 5: Solve for x
   x = 38,677,859,722.27/90,554.63
6. Step 6: Final answer
   x = 427,121.86