Finding the Third Proportional to 2,531,580 and 5,157,168

Step by Step Solution

1. Step 1: Write the proportion equation
   2,531,580 : 5,157,168 = 5,157,168 : x
2. Step 2: Convert to fraction form
   2,531,580/5,157,168 = 5,157,168/x
3. Step 3: Cross multiply
   2,531,580x = 5,157,168 × 5,157,168
4. Step 4: Simplify right side
   2,531,580x = 26,596,381,780,224
5. Step 5: Solve for x
   x = 26,596,381,780,224/2,531,580
6. Step 6: Final answer
   x = 10,505,842.90