Finding the Third Proportional to 9,829,972 and 21,549,516

Step by Step Solution

1. Step 1: Write the proportion equation
   9,829,972 : 21,549,516 = 21,549,516 : x
2. Step 2: Convert to fraction form
   9,829,972/21,549,516 = 21,549,516/x
3. Step 3: Cross multiply
   9,829,972x = 21,549,516 × 21,549,516
4. Step 4: Simplify right side
   9,829,972x = 464,381,639,834,256
5. Step 5: Solve for x
   x = 464,381,639,834,256/9,829,972
6. Step 6: Final answer
   x = 47,241,400.06