Finding the Third Proportional to 30,699.84 and 66,068.58

Step by Step Solution

1. Step 1: Write the proportion equation
   30,699.84 : 66,068.58 = 66,068.58 : x
2. Step 2: Convert to fraction form
   30,699.84/66,068.58 = 66,068.58/x
3. Step 3: Cross multiply
   30,699.84x = 66,068.58 × 66,068.58
4. Step 4: Simplify right side
   30,699.84x = 4,365,057,015.46
5. Step 5: Solve for x
   x = 4,365,057,015.46/30,699.84
6. Step 6: Final answer
   x = 142,184.99