Finding the Third Proportional to 188,307,468 and 405,470,196

Step by Step Solution

1. Step 1: Write the proportion equation
   188,307,468 : 405,470,196 = 405,470,196 : x
2. Step 2: Convert to fraction form
   188,307,468/405,470,196 = 405,470,196/x
3. Step 3: Cross multiply
   188,307,468x = 405,470,196 × 405,470,196
4. Step 4: Simplify right side
   188,307,468x = 164,406,079,844,278,400
5. Step 5: Solve for x
   x = 164,406,079,844,278,400/188,307,468
6. Step 6: Final answer
   x = 873,072,542.42