Finding the Third Proportional to 98,428.50 and 145,566

Step by Step Solution

1. Step 1: Write the proportion equation
   98,428.50 : 145,566 = 145,566 : x
2. Step 2: Convert to fraction form
   98,428.50/145,566 = 145,566/x
3. Step 3: Cross multiply
   98,428.50x = 145,566 × 145,566
4. Step 4: Simplify right side
   98,428.50x = 21,189,460,356
5. Step 5: Solve for x
   x = 21,189,460,356/98,428.50
6. Step 6: Final answer
   x = 215,277.69