Finding the Third Proportional to 188,838,810 and 406,375,468

Step by Step Solution

1. Step 1: Write the proportion equation
   188,838,810 : 406,375,468 = 406,375,468 : x
2. Step 2: Convert to fraction form
   188,838,810/406,375,468 = 406,375,468/x
3. Step 3: Cross multiply
   188,838,810x = 406,375,468 × 406,375,468
4. Step 4: Simplify right side
   188,838,810x = 165,141,020,992,219,008
5. Step 5: Solve for x
   x = 165,141,020,992,219,008/188,838,810
6. Step 6: Final answer
   x = 874,507,846.09