Finding the Third Proportional to 28,670.91 and 42,161.34

Step by Step Solution

1. Step 1: Write the proportion equation
   28,670.91 : 42,161.34 = 42,161.34 : x
2. Step 2: Convert to fraction form
   28,670.91/42,161.34 = 42,161.34/x
3. Step 3: Cross multiply
   28,670.91x = 42,161.34 × 42,161.34
4. Step 4: Simplify right side
   28,670.91x = 1,777,578,906.81
5. Step 5: Solve for x
   x = 1,777,578,906.81/28,670.91
6. Step 6: Final answer
   x = 61,999.40