Finding the Third Proportional to 21,345 and 31,465.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,345 : 31,465.50 = 31,465.50 : x
2. Step 2: Convert to fraction form
   21,345/31,465.50 = 31,465.50/x
3. Step 3: Cross multiply
   21,345x = 31,465.50 × 31,465.50
4. Step 4: Simplify right side
   21,345x = 990,077,690.25
5. Step 5: Solve for x
   x = 990,077,690.25/21,345
6. Step 6: Final answer
   x = 46,384.53