Finding the Third Proportional to 42,070.64 and 90,830.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42,070.64 : 90,830.53 = 90,830.53 : x
2. Step 2: Convert to fraction form
   42,070.64/90,830.53 = 90,830.53/x
3. Step 3: Cross multiply
   42,070.64x = 90,830.53 × 90,830.53
4. Step 4: Simplify right side
   42,070.64x = 8,250,185,407.16
5. Step 5: Solve for x
   x = 8,250,185,407.16/42,070.64
6. Step 6: Final answer
   x = 196,103.16