Finding the Third Proportional to 148,498.88 and 243,783

Step by Step Solution

1. Step 1: Write the proportion equation
   148,498.88 : 243,783 = 243,783 : x
2. Step 2: Convert to fraction form
   148,498.88/243,783 = 243,783/x
3. Step 3: Cross multiply
   148,498.88x = 243,783 × 243,783
4. Step 4: Simplify right side
   148,498.88x = 59,430,151,089
5. Step 5: Solve for x
   x = 59,430,151,089/148,498.88
6. Step 6: Final answer
   x = 400,206.07