Finding the Third Proportional to 137,763.75 and 212,784

Step by Step Solution

1. Step 1: Write the proportion equation
   137,763.75 : 212,784 = 212,784 : x
2. Step 2: Convert to fraction form
   137,763.75/212,784 = 212,784/x
3. Step 3: Cross multiply
   137,763.75x = 212,784 × 212,784
4. Step 4: Simplify right side
   137,763.75x = 45,277,030,656
5. Step 5: Solve for x
   x = 45,277,030,656/137,763.75
6. Step 6: Final answer
   x = 328,657.07