Finding the Third Proportional to 13,970.81 and 30,398.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,970.81 : 30,398.63 = 30,398.63 : x
2. Step 2: Convert to fraction form
   13,970.81/30,398.63 = 30,398.63/x
3. Step 3: Cross multiply
   13,970.81x = 30,398.63 × 30,398.63
4. Step 4: Simplify right side
   13,970.81x = 924,076,401.89
5. Step 5: Solve for x
   x = 924,076,401.89/13,970.81
6. Step 6: Final answer
   x = 66,143.35