Finding the Third Proportional to 194,063,809 and 420,871,111

Step by Step Solution

1. Step 1: Write the proportion equation
   194,063,809 : 420,871,111 = 420,871,111 : x
2. Step 2: Convert to fraction form
   194,063,809/420,871,111 = 420,871,111/x
3. Step 3: Cross multiply
   194,063,809x = 420,871,111 × 420,871,111
4. Step 4: Simplify right side
   194,063,809x = 177,132,492,074,374,336
5. Step 5: Solve for x
   x = 177,132,492,074,374,336/194,063,809
6. Step 6: Final answer
   x = 912,753,866.82