Finding the Third Proportional to 103,248 and 212,054.63

Step by Step Solution

1. Step 1: Write the proportion equation
   103,248 : 212,054.63 = 212,054.63 : x
2. Step 2: Convert to fraction form
   103,248/212,054.63 = 212,054.63/x
3. Step 3: Cross multiply
   103,248x = 212,054.63 × 212,054.63
4. Step 4: Simplify right side
   103,248x = 44,967,163,983.89
5. Step 5: Solve for x
   x = 44,967,163,983.89/103,248
6. Step 6: Final answer
   x = 435,525.76