Finding the Third Proportional to 89,445,729 and 189,204,426

Step by Step Solution

1. Step 1: Write the proportion equation
   89,445,729 : 189,204,426 = 189,204,426 : x
2. Step 2: Convert to fraction form
   89,445,729/189,204,426 = 189,204,426/x
3. Step 3: Cross multiply
   89,445,729x = 189,204,426 × 189,204,426
4. Step 4: Simplify right side
   89,445,729x = 35,798,314,817,989,476
5. Step 5: Solve for x
   x = 35,798,314,817,989,476/89,445,729
6. Step 6: Final answer
   x = 400,223,858.85