Finding the Third Proportional to 100,973.25 and 212,409

Step by Step Solution

1. Step 1: Write the proportion equation
   100,973.25 : 212,409 = 212,409 : x
2. Step 2: Convert to fraction form
   100,973.25/212,409 = 212,409/x
3. Step 3: Cross multiply
   100,973.25x = 212,409 × 212,409
4. Step 4: Simplify right side
   100,973.25x = 45,117,583,281
5. Step 5: Solve for x
   x = 45,117,583,281/100,973.25
6. Step 6: Final answer
   x = 446,827.09