Finding the Third Proportional to 188,076,448 and 290,499,575

Step by Step Solution

1. Step 1: Write the proportion equation
   188,076,448 : 290,499,575 = 290,499,575 : x
2. Step 2: Convert to fraction form
   188,076,448/290,499,575 = 290,499,575/x
3. Step 3: Cross multiply
   188,076,448x = 290,499,575 × 290,499,575
4. Step 4: Simplify right side
   188,076,448x = 84,390,003,075,180,624
5. Step 5: Solve for x
   x = 84,390,003,075,180,624/188,076,448
6. Step 6: Final answer
   x = 448,700,536.26