Finding the Third Proportional to 82,990,642.50 and 178,753,709.25

Step by Step Solution

1. Step 1: Write the proportion equation
   82,990,642.50 : 178,753,709.25 = 178,753,709.25 : x
2. Step 2: Convert to fraction form
   82,990,642.50/178,753,709.25 = 178,753,709.25/x
3. Step 3: Cross multiply
   82,990,642.50x = 178,753,709.25 × 178,753,709.25
4. Step 4: Simplify right side
   82,990,642.50x = 31,952,888,570,633,536
5. Step 5: Solve for x
   x = 31,952,888,570,633,536/82,990,642.50
6. Step 6: Final answer
   x = 385,017,968.39