Finding the Third Proportional to 86,291,990 and 184,866,172

Step by Step Solution

1. Step 1: Write the proportion equation
   86,291,990 : 184,866,172 = 184,866,172 : x
2. Step 2: Convert to fraction form
   86,291,990/184,866,172 = 184,866,172/x
3. Step 3: Cross multiply
   86,291,990x = 184,866,172 × 184,866,172
4. Step 4: Simplify right side
   86,291,990x = 34,175,501,549,933,584
5. Step 5: Solve for x
   x = 34,175,501,549,933,584/86,291,990
6. Step 6: Final answer
   x = 396,044,888.41