Finding the Third Proportional to 42,054.19 and 70,090.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,054.19 : 70,090.31 = 70,090.31 : x
2. Step 2: Convert to fraction form
   42,054.19/70,090.31 = 70,090.31/x
3. Step 3: Cross multiply
   42,054.19x = 70,090.31 × 70,090.31
4. Step 4: Simplify right side
   42,054.19x = 4,912,651,906.35
5. Step 5: Solve for x
   x = 4,912,651,906.35/42,054.19
6. Step 6: Final answer
   x = 116,817.19